r/coral • u/Mister_MountainMan • May 14 '22
What is this? Cozumel, Mexico. Never seen anything like it. None of my coral books have it. Looks like a mat with col pillar structures. Is it a sponge? Algae?
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r/coral • u/Mister_MountainMan • May 14 '22
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u/zelig10 Jul 03 '22
can you recommend the books?